Introducing Blockchain Operational Security Assessments: Securing the Infrastructure Behind Your Onchain System

Historically, discussions around blockchain security have been principally focused on smart contract vulnerabilities. Terms like reentrancy, integer overflows, and flash loan exploits dominated the news, often leading to multi-million dollar losses. However, smart contracts represent only one piece of the complex blockchain security puzzle.

For years, the industry has underinvested in securing the broader operational infrastructure that surrounds onchain systems. For development teams and users, it is time for a mindset shift: the code is only as secure as the operations surrounding it.

The Shifting Threat Landscape: Why Offchain Has Become the Attack Vector

While protocols continue to invest heavily in smart contract audits — a practice that remains critical — the reality is that many major security breaches happen offchain.

Over the past two years, data indicates that the majority of total funds lost in crypto were due to traditional IT and offchain attack vectors (such as phishing or poor key management), rather than smart contract bugs. This is reflected in positive trends, such as a significant decrease in losses from stolen private keys and price oracle manipulation (which was once the top smart contract exploit).

However, as code security matures, attackers have adapted, leveraging weaknesses in operational workflows and supporting infrastructure. New, devastating vectors have emerged, including multi-sig hijacking, and many of the most damaging attacks now exploit vulnerabilities that are common across the broader software industry, from social engineering to compromised dependencies.

Here are some of the most painful examples:

• The ByBit hack in 2025, which led to a devastating $1.4 billion loss, was caused by a blind signature that could have been avoided if proper transaction verification had been in place, stemming from poor software dependencies control.
• Other major breaches occur through stolen private keys, compromised cloud accounts, phishing attacks, or simple human error in admin processes.
• Crypto-native teams also constantly dodge bullets from sophisticated supply chain attacks where malicious dependencies target cryptocurrency projects and attempt to compromise fundamental libraries in the ecosystem.

For onchain applications that rely on centralized components (such as front-ends, domain name registrars, servers, or DevOps tools), security vulnerabilities often arise from insecure third-party dependencies or fragmented security posture across integrations. This distributed complexity increases the attack surface exponentially compared to the self-contained environment of a smart contract.

Securing the Critical Operations Surrounding Your Blockchain

An Operational Security assessment should be specifically designed to address security gaps by securing the critical operations surrounding blockchain systems. This would help teams identify and fix weaknesses in areas like key management, access controls, and operational workflows before attackers exploit them, protecting both funds and reputation.

This type of comprehensive service is the most effective solution for any organization managing valuable on-chain assets but relying on human processes, including financial institutions, DeFi protocol teams managing multisig wallets, and crypto-native startups relying on cloud providers or communication tools.

A Holistic Approach to Resilience

Such an assessment should also provide a comprehensive, modular security assessment that can be customized to each client’s needs. The core assessment might begin with a tailored operational security questionnaire and structured interviews with key stakeholders (e.g., DevOps, treasury leads) to gather insight into your operations.

The expert security team then could perform detailed analysis, including threat modeling of the operational environment. This process maps out critical assets (private keys, admin contracts) and models real-world threats, such as “What if a deployer’s laptop is hacked?” or “What if an API key is leaked?” to prioritize the most dangerous scenarios.

The assessment must review security across critical operational domains, including:

• Key Management & Custody: Ensuring secure storage, recovery plans, and access controls for smart contract admin keys.
• Access Control & Privileged Roles: Evaluating role separation, the use of Role-Based Access Control (RBAC) in sensitive systems, and adherence to the least privilege model.
• Treasury Operations: Assessing the operational guidelines, security procedures and DeFi risk management practices of treasuries.
• Offchain Surfaces: Reviewing mobile app defenses, backend/API security (including common attack vector mitigation and input validation), cloud accounting practices, and enforcement of MFA across platforms.
• Incident Response & Resilience: Evaluating formal Incident Response Plans (IRPs), 24/7 coverage, and the ability to pause smart contracts or services in an emergency.
• Third-Party & Vendor Dependencies: Assessing the security posture of providers, SDKs, and integrations to prevent vulnerabilities from being introduced.
• DNS Registrar: Evaluating domain management, DNS security configurations, and registrar account protection.
  

Built on Leading Industry Standards

The assessment framework must be rigorously benchmarked against the industry’s most respected standards, ensuring operations meet global compliance and security thresholds.

Our methodology aligns directly with:

• Blockchain Security Standards Council (BSSC): Your infrastructure and integrations are evaluated against the Token Integration Standard, Key Management Standard and the General Security and Privacy Guidelines.
• The CryptoCurrency Security Standard (CCSS): We evaluate your key lifecycle management, wallet creation, and storage against the gold standard for crypto-asset custody (Levels I-III).
• ISO/IEC 27001 & NIST: Mapping your offchain infrastructure and access controls against traditional information security frameworks to bridge the gap between corporate IT and blockchain protocols.
• SEAL Certifications: We are keeping track of the rapidly developing SEAL certification checklists across various domains and absorbing it in our assessment framework.

Our team does not just follow these guidelines; we actively contribute to defining blockchain security standards. As members of the working groups shaping the future of blockchain security, we ensure our clients are assessed not just against today's standards, but prepared for tomorrow's regulatory landscape.

Clear Outcomes and a Roadmap for Security Maturity

The outcome is a comprehensive report that provides both a snapshot of your current security posture and a clear roadmap for prioritized improvements.

Each security domain should be scored and assigned a rating to give a clear picture of strengths and gaps. For every finding, clear, actionable recommendations tailored to your setup are provided, helping effectively prioritize necessary remediations.

This can be further complemented with security training and workshops to ensure that teams (the first line of defense) are trained in operational security best practices, covering topics like phishing awareness, social engineering, and secure key management.

Conclusion

Securing code is merely the baseline. The blockchain industry has long recognized smart contract risk, but the operational infrastructure surrounding onchain systems has not received the same level of scrutiny. To truly protect users and satisfy increasing scrutiny from investors and regulators, organizations must demonstrate defense in depth: securing the human and digital infrastructure that surrounds onchain logic, with the same rigor applied to the code itself.

By engaging with a leading security provider, companies gain a deeper understanding of how to maintain and improve their security posture going forward, securing not just their code, but the people, processes, and technology that support their entire ecosystem.

Implementing a robust operational security service is not merely an option but a foundational requirement for sustained success in the blockchain industry. It is the gold standard for protecting digital assets and ensuring the longevity of decentralized systems.

Don’t let an offchain oversight compromise your on-chain success. Contact our team to begin your Operational Security Assessment.

FAQs

What is a Blockchain Operational Security Assessment?

A Blockchain Operational Security Assessment is an evaluation of the offchain infrastructure surrounding onchain systems. It reviews critical domains such as key management, access controls, treasury operations, third-party dependencies, and incident response. It addresses the human and operational risks that increasingly drive crypto losses.

Why are offchain attack vectors now more dangerous than smart contract vulnerabilities?

Over the past two years, the majority of funds lost in crypto stemmed from traditional IT and offchain vectors, such as phishing, stolen private keys, and compromised cloud accounts. Attackers have shifted focus to weaker operational workflows, making offchain infrastructure the new frontline of blockchain security.

What caused the Bybit hack in 2025, and could it have been prevented?

The 2025 Bybit hack, which resulted in a $1.4 billion loss, was caused by a blind signature vulnerability rooted in poor software dependency controls. It could have been prevented with proper transaction verification practices and tighter management of third-party software dependencies.

What security standards does a Blockchain Operational Security Assessment align with?

A rigorous assessment should be benchmarked against leading standards, including the Blockchain Security Standards Council (BSSC), the CryptoCurrency Security Standard (CCSS) for key lifecycle and custody management, ISO/IEC 27001 and NIST frameworks for offchain infrastructure, and SEAL certification checklists across various security domains.

Who needs a Blockchain Operational Security Assessment?

Any organization managing valuable onchain assets that relies on human processes and external infrastructure should consider this type of assessment. This includes financial institutions, DeFi protocol teams managing multisig wallets, and crypto-native startups that depend on cloud providers, communication tools, or third-party integrations.